I do remember a very long elaborate post that was linked on here somewhere. It was from the USA but someone took some very serious time and effort to test out several different brands of scopes, many of them high-end, and I don't remember anything about most scopes not tracking properly. Someone with a better memory than me might be able to find / link the article.
At some point I would like to swap out the SIII 6-24x50 LRMD on my TRG for something Mil/Mil but I'm open to the idea of something other than a mildot reticle - hence the original post.